Just put the .smc file into the roms folder on your sd/usb main page. Like this snes9xgx folder when you open the sd card or usb. sd card ->snes9xgx->roms (Put it here) you will also see cheats and saves folder

Ok i got snes9xgx to load.I put the Super Metroid.smc file in the roms folder like this sd card >snes9xgx>roms>Super Metroid.smc. I try to load it the Nintendo screen comes up then goes away but thats it.

Ok i got snes9xgx to load.I put the Super Metroid.smc file in the roms folder like this sd card >snes9xgx>roms>Super Metroid.smc. I try to load it the Nintendo screen comes up then goes away but thats it.

Did you get the latest version of the emulator from WiiBrew? I once downloaded an emulator from homebrew channel that was corrupt, so I now get from WiiBrew or the source. Also, try some different roms and see if they work.